Gretl (Gnu Regression, Econometrics and Time-series Library) is a cross-platform software package for econometric analysis, written in the C programming language. It is is free, open-source software. You may redistribute it and/or modify it under the terms of the GNU General Public License (GPL3) as published by the Free Software Foundation.
These details are provided for information only. No information here is legal advice and should not be used as such.